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[linux-2.6] / arch / ppc / platforms / 4xx / redwood6.c
1 /*
2  * arch/ppc/platforms/4xx/redwood6.c
3  *
4  * Author: Armin Kuster <akuster@mvista.com>
5  *
6  * 2002 (c) MontaVista, Software, Inc.  This file is licensed under
7  * the terms of the GNU General Public License version 2.  This program
8  * is licensed "as is" without any warranty of any kind, whether express
9  * or implied.
10  */
11
12 #include <linux/config.h>
13 #include <linux/init.h>
14 #include <linux/pagemap.h>
15 #include <linux/platform_device.h>
16 #include <linux/ioport.h>
17 #include <asm/io.h>
18 #include <asm/ppc4xx_pic.h>
19 #include <linux/delay.h>
20 #include <asm/machdep.h>
21
22 /*
23  * Define external IRQ senses and polarities.
24  */
25 unsigned char ppc4xx_uic_ext_irq_cfg[] __initdata = {
26         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 7 */
27         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 8 */
28         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 9 */
29         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 0 */
30         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 1 */
31         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 2 */
32         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 3 */
33         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 4 */
34         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 5 */
35         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 6 */
36 };
37
38 static struct resource smc91x_resources[] = {
39         [0] = {
40                 .start  = SMC91111_BASE_ADDR,
41                 .end    = SMC91111_BASE_ADDR + SMC91111_REG_SIZE - 1,
42                 .flags  = IORESOURCE_MEM,
43         },
44         [1] = {
45                 .start  = SMC91111_IRQ,
46                 .end    = SMC91111_IRQ,
47                 .flags  = IORESOURCE_IRQ,
48         },
49 };
50
51 static struct platform_device smc91x_device = {
52         .name           = "smc91x",
53         .id             = 0,
54         .num_resources  = ARRAY_SIZE(smc91x_resources),
55         .resource       = smc91x_resources,
56 };
57
58 static struct platform_device *redwood6_devs[] __initdata = {
59         &smc91x_device,
60 };
61
62 static int __init
63 redwood6_platform_add_devices(void)
64 {
65         return platform_add_devices(redwood6_devs, ARRAY_SIZE(redwood6_devs));
66 }
67
68
69 void __init
70 redwood6_setup_arch(void)
71 {
72 #ifdef CONFIG_IDE
73         void *xilinx, *xilinx_1, *xilinx_2;
74         unsigned short us_reg5;
75 #endif
76
77         ppc4xx_setup_arch();
78
79 #ifdef CONFIG_IDE
80         xilinx = (unsigned long) ioremap(IDE_XLINUX_MUX_BASE, 0x10);
81         /* init xilinx control registers - enable ide mux, clear reset bit */
82         if (!xilinx) {
83                 printk(KERN_CRIT
84                        "redwood6_setup_arch() xilinxi ioremap failed\n");
85                 return;
86         }
87         xilinx_1 = xilinx + 0xa;
88         xilinx_2 = xilinx + 0xe;
89
90         us_reg5 = readb(xilinx_1);
91         writeb(0x01d1, xilinx_1);
92         writeb(0x0008, xilinx_2);
93
94         udelay(10 * 1000);
95
96         writeb(0x01d1, xilinx_1);
97         writeb(0x0008, xilinx_2);
98 #endif
99
100 #ifdef DEBUG_BRINGUP
101         bd_t *bip = (bd_t *) __res;
102         printk("\n");
103         printk("machine\t: %s\n", PPC4xx_MACHINE_NAME);
104         printk("\n");
105         printk("bi_s_version\t %s\n", bip->bi_s_version);
106         printk("bi_r_version\t %s\n", bip->bi_r_version);
107         printk("bi_memsize\t 0x%8.8x\t %dMBytes\n", bip->bi_memsize,
108                bip->bi_memsize / (1024 * 1000));
109         printk("bi_enetaddr %d\t %2.2x%2.2x%2.2x-%2.2x%2.2x%2.2x\n", 0,
110                bip->bi_enetaddr[0], bip->bi_enetaddr[1], bip->bi_enetaddr[2],
111                bip->bi_enetaddr[3], bip->bi_enetaddr[4], bip->bi_enetaddr[5]);
112
113         printk("bi_intfreq\t 0x%8.8x\t clock:\t %dMhz\n",
114                bip->bi_intfreq, bip->bi_intfreq / 1000000);
115
116         printk("bi_busfreq\t 0x%8.8x\t plb bus clock:\t %dMHz\n",
117                bip->bi_busfreq, bip->bi_busfreq / 1000000);
118         printk("bi_tbfreq\t 0x%8.8x\t TB freq:\t %dMHz\n",
119                bip->bi_tbfreq, bip->bi_tbfreq / 1000000);
120
121         printk("\n");
122 #endif
123
124         /* Identify the system */
125         printk(KERN_INFO "IBM Redwood6 (STBx25XX) Platform\n");
126         printk(KERN_INFO
127                "Port by MontaVista Software, Inc. (source@mvista.com)\n");
128
129         device_initcall(redwood6_platform_add_devices);
130 }
131
132 void __init
133 redwood6_map_io(void)
134 {
135         int i;
136
137         ppc4xx_map_io();
138         for (i = 0; i < 16; i++) {
139                 unsigned long v, p;
140
141                 /* 0x400x0000 -> 0xe00x0000 */
142                 p = 0x40000000 | (i << 16);
143                 v = STBx25xx_IO_BASE | (i << 16);
144
145                 io_block_mapping(v, p, PAGE_SIZE,
146                                  _PAGE_NO_CACHE | pgprot_val(PAGE_KERNEL) |
147                                  _PAGE_GUARDED);
148         }
149 }
150
151 void __init
152 platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
153               unsigned long r6, unsigned long r7)
154 {
155         ppc4xx_init(r3, r4, r5, r6, r7);
156
157         ppc_md.setup_arch = redwood6_setup_arch;
158         ppc_md.setup_io_mappings = redwood6_map_io;
159 }